spa_pod_builder_add() is a va_args function that is terminated by a NULL
argument. The last argument must be a pointer type, because otherwise
checking for a NULL pointer can fail.
The __attribute__((__sentinel__)) prints a compiler warning, if the last
argument of a call to spa_pod_builder_add() is not a pointer type.
Fix all sentinel warnings by replacing all integer type 0 with pointer
type NULL in calls to spa_pod_builder_add().
Use a new rate_match io area to exhange rate matching info between
sink/source and resampler.
Compensate for the rate match delay when scheduling timeouts.
Let the resampler notify the source of how many samples it needs to
produce the desired quantum. Make sure we keep an extra buffer in
the device to be able to make this possible.
Let the adapter directly call the slave node process function.
An adapter is like an audio-dsp node and client-stream combined.
It allows tighter control with the device (for rate control and
variable buffer sizes), software volume.
The idea is to also implement the client-stream with this
eventually.
Don't let permissions of an object influence the child permissions,
this is not so easy to manage and needs some more thought.
The result is now that it's possible to see a reference to a (parent)
id that is not visible, but that's ok.
spa_pod_builder_frame() should return the position in the builder
memory or NULL when the frame doesn't fit. Check the size of the
frame instead of assuming the frame is already written to the
buffer.
Add system functions that can execute on the evenless Real-Time
subsystem. https://evlproject.org/
Enable this plugin as the system library for the data thread and
all poll/timerfd/eventfd will execute on the evl subsystem.
Define a set of standard factory names and document what they
contain. This makes it possible to change the implementation by
mapping the factory-name to a different shared library.
